Steering-gearing.



VAN ZANDT M. MOORE.

STEERING GEARING.

APPLICATION FILED 11111.15, 1911.

1,033,442. Patented July 23, 1912.

2 SHEETS-SHEET 1.

VAN ZANDT M. MOORE.

STEERING GBARING.

APPLICATION FILED MAR. 15, 1911.

Patented July 23, 1912.

2 SHEETS-SHEBT 2.

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Figure 1 is n side elevawm'm and Worm wheel my inwntiun: Fig. '2 mmfi m hulk-Med by I'hc 3 :1 side elevation fm m f (he gearing. Fr in PR 1 am! 1?, m rep- !Iv shnfi having: :1 worm 11. (Ennvn as juuixmlvd in a whivh lmmnml on Tim casing B shown 21?; mi pmz-man-v kwz if; Mia and ,(;.?,'.\(2 111i; M 2;: um? Sammy. is

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t p-.4 mm park M Hlr- (using 5 Us :2 and 2'1. which re win \Yuilll Whwh and 33 haw n E1 11 the Worm U. =sm= 42w hm1n as segments. W0 uf the (axing hr-r0 are 3.7 rigidly swurml t0 the m v F and X. This may be, imgifnfizkwhl I newnnpiiahudby n'm'idingthe y lillnd ends and dumping the jf .2 Thu arm; 12% and mlinw iw-"vfhm' so m muse the arm w;-. @ur in ommfitn diz'mi'ion :wmiiwt 13w wormv This wnsimining is .Jmwn n8 nxpile-h cd by :1. mm hnvkie wnsisii threaded @leeve threads whivh 81 and 14:5 of Wink; pivoted 'zw i rfiwly tw til? 11mm; 9-}, 1 if). I? Win be he Hm? by fightFg-uing 111R mrn imckle. an; urk Ta may be taken so but the wc-lm wire-v1 always has in engagement with H10 under 1 on The worm whilv he wmzn 1121s a tooth in Qngagvment face of the thread. With it is only necessary i0 can hiven mechanism at any suitable i119 co mposite. worm wh el six-um an efi'ective drive. 11 in Fig. 1 4L0 represents 3' be c Germ] as leading to tha m): (using 1 M ML *5 [1e ball and 41 of muu'm Y mom: ad on the squared is shown, the arm 4-2 and iink,

iion, to make the worm shaft tubular and mount within it other shafts, and such is the (c'IStIUCtlOII illustrated in Fig. 2, there bei two shafts and 4.6 within the worm shaft which may control the fuel supply and the sparking, as usual.'

In Fig. 3 is shown a somewhat modified form where there are two worms with their threads extending in opposite directions and the two worm wheels are mounted on opposite sides of the shaft. In that view, represents the worm shaft; 51 and 52 right and left hand worms thereon; 53 and 54 the two worm Wheels meshing with the respective worms; 55 and 56 the shafts of the respecti'e worm wheels and 57 the casing in which such parts are mounted. On the shafts 55 and 56, respectively, are the .arms 57 and 58, which are constrained toward each other by the turn buckle 59 screwing onto the links 60 and 61, which are provided Withf right and left hand threads. Suitable jam nuts 62 and 63 lock the turn buckle. 64' indicates the member connected to the drivenj mechanism andthis member is shown as' havmg a head with a spherical recess occupied' by the ball end 65 of the arm 58. In;

this construction the tightening of the turn; buckle causes the teeth of the worm wheel} 53 to bear against the under face of the right. hand worm 51. v

It will be seen that either construction described is very simple and requires few extra parts above the ordinary worm mechanism. At the same time, the undesirable: back lash is entirely obviated. While I have illustrated my invention in these two forms; I do not wish to limit myself thereto, as other embodiments may be made by those skilled in this art without departing from my invention. Having thus described my invention, what I claim is 1. In mecllanismof the class described,

the combination, with a driving member;

having worm threads, of a plurality of piv-; otally mounted driven members engaging therewith at different threads respectively, means for adjusting said driven members relative to each other to cause opposed engagement with the wor u threads and for positively holding them in such relation while allowing them to move, and mechanism adapted to be operated and connected; with the driven members.

2. The combination of a worm shaft, worm threads thereon, a plurality of worm: wheels hax ing opposed engagement with different worm threads, and turning in the same direction for a given rotation of the worm shaft, means for constraining the worm wheels, and an operatable connection from the worm wheels. I

3. In steering gearing, the combination, with a shaft carrying Worm threads, a pair of transverse shafts, worm wheel segments rigid on said shafts meshing with the threads, arms on said shafts, and means for adjusting said arms with reference to each other while allowing them to turn in the same direction. I

4. In steering gearing, the combination, with a suitable frame, of a shaft journaled therein and carrying worm threads, a pair of shafts journaled in the frame transversely of the worm shaft, a pair of worm segments rigid on said transverse shafts, arms on the transverse shafts outside of the frame, and means connecting said arms together and adapted to adjusttheir relative position to prevent undesirable back lash.

5. In steering gearing, the combination, with a worm shaft, a pair of worm segments coacting with different threads thereof respectively, arms connected with said segments, and a turn buckle connecting said arms.

6. In steering mechanism, the combination, with a casing, of a worm shaft having worm threads within the casing, a'pair of transverse shafts journaled in the casing, worm wheel segments on said shaftswithin the casing meshing with the worm threads, a pair of arms outside the casing rigid on the respective transverse shafts, links and a turnbuckle connecting said arms, and a connection from one of said arms formechanism adapted to be driven.

7. In steering gearing, the"com'binat-ion, with a rotatable worm shaft, of a'pluralit of worm wheels coacting therewith, and eac having complete teeth and acting on different threads, means for constraining the worm wheels to cause opposed engagement with the worm while allowing them'to turn in the [same direction, and mechanism to be operated and connected with. the worm wheels? 4 8. In steering gearing, the combination, with a rotatable worm driving shaft, of a pair of segmental worm wheels mounted on separated axes to' coact therewith and turn in the same direction, and means for mutually constraining said worm wheels to cause engagement of'their teeth with oppositely acting surfaces of the drive shaft.

9. The combination of a rotatable driving shaft having worm threads, ap'air of wormwheel members having teeth engaging dif ferent threads respectively of the driving shaft, said 'worm wheel members being mounted on parallel axes, a pair of arms connected respectively with the worm-wheel 1 v a turn buckle connected to the members, and two-arms.

10. The combination of a rotatable shaft having worm threads, a pair of worm wheel threads respectively of the driving shaft, said Wo rm wheel members being mounted to mmemb'ers havin teeth engaging differentturn in the same direction for a given rotation of the worm shaft, means for adjusting said worm' Wheel members relative to each other and holding them in such adjustment notwithstanding their movement, and an operating connection from the worm wheel members.

11. The Combination, with a rotatable driving shaft having worm threads, of a pair of worm whee] members having teeth engaging different threads respectively of the driving shaft, said worm wheel members.

worm wheel members, and an adjustable device pivotallyconnected with said arms.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses. VAN ZANDT M. MOORE. Witnesses J. B. HULL, A. L. LORD.

Copies of this patent may be obtained fqr 'five cents each, by addressing the Commissioner of Patents,

. .Washington, D. 0. 

